I think if that was the case we would see more failures. The TPS is just a Potentiometer. Its resistance varies so I dont see how a voltage drop could make it go bad. What usually happens is they get dead spots in them and no longer offer linear resistance and in turn cause your fuel mapping to be all over the place.
I should have been a little more clear. I also said I believe there is a little more going on. I'm very familiar with what a TPS is and what it does and have 20 years of diagnostic experience in the auto industry. I've tackled some very difficult to find, many other shop problematic give-ups. There's alot more than fuel mapping with a TPS.
I'm looking for why the TPS gets the dead spots.
In the many cases I have seen with problematic TPS', voltage issues in the charging system have been a big culprit for premature TPS failures due to
ELECTRICAL NOISE from other electrcial components. Fuel pumps are a common item giving off causing excessive electrical noise. This is the area (electrical noise) I will be testing and looking into this season.
When the normal operating voltage gets to low or too high, the difference loads can create electrical noise and this is what can cause or create the dead spot in the TPS.
Poor grounds are another. Polaris has always had a less than desireable ground system.
Another culprit to premature TPS demise is excessive vibration. Vehicles that have been problematic have been big engine shakers, IE: early cummins diesels, pre-powerstroke Fords, 6.5 chev diesels, certain Nissans. Better fueling, better engine management systems, better motor mounts have solved many of these problems. Motor mounts....hmmm...
If one wants to discount the adding of extra electrical items to the existing charging system not causing any issues, then has anybody actually tested a stock Pro's electrical system and documented with the proper equipment what it's true capabilities are? Very easy to do.
And then verified what the actual added loads of electrical items when installing a turbo actually are from these extra components ? I'd like to see the math if anyone has.
If anybody has this and can prove it, I will gladly delete my post.